Chapter 3 • Network management
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markup language (XML) formatted file and updates the Vision
UEM database with the site definitions and configurations. A
typical use of this tool is the integration of a service provider's
order-entry system. For better integration with desktop tools,
there is also a utility to convert comma-separated value
(CSV)-formatted files into XML.
Finally, NMSS provides a commissioning interface that is used
by the WebACS during the auto-commissioning process.
Fault management
Fault management functions provided by NMSS include status
monitoring, reporting, and alarms.
Status monitoring
Vision monitors the status of gateway and remote site network
components through simple network management protocol
(SNMP) and proprietary Hughes protocols. All managed HX
network components have embedded SNMP agents that can
report status and statistics information to a suitably configured
SNMP manager.
Vision uses SNMP to periodically obtain key status information
from gateway components. It can also query remote site
components periodically for key status information, although this
capability can be disabled to conserve network resources. Vision
can use an alternate mechanism–the VSAT information protocol
(VIP)–when available, to get status information from remote sites
more efficiently.
Current status information is displayed on the Vision UEM GUI
through color-coded icons. The GUI also provides fault-isolation
capabilities that operators and customer support agents can use to
troubleshoot and diagnose faults. The diagnosis functions use
real-time SNMP queries to report up-to-date information from
network components.
Alarms
HX network components with SNMP agents generate SNMP
traps when certain error conditions occur, and send them to a
configurable trap IP address. The traps generated by network
components are documented in the SNMP management
information base (MIB) definitions for those components.
To assist in the detection of failed sites or specific patterns of
network failures, NMSS can generate certain alarms in the form
of SNMP traps. For example, a component alarm can be
generated when a remote site has been down for a configured
period of time, and an aggregate alarm can be generated when the
number or rate of failures of components in a specific group
exceeds a configured threshold.
Summary of Contents for HX System
Page 1: ...1037852 0001 Revision A September 4 2008 HX System System Overview Release 1 2 7 ...
Page 8: ... Contents viii 1037852 0001 Revision A ...
Page 10: ... Figures x 1037852 0001 Revision A ...
Page 12: ... Tables xii 1037852 0001 Revision A ...
Page 24: ...Chapter 1 Overview 12 1037852 0001 Revision A ...
Page 26: ...Chapter 2 Subsystems 14 1037852 0001 Revision A Figure 3 HX Subsystems and LAN Connections ...
Page 50: ...Chapter 4 Network security 38 1037852 0001 Revision A ...
Page 62: ...Chapter 5 Bandwidth management 50 1037852 0001 Revision A ...
Page 70: ...Chapter 6 IP features 58 1037852 0001 Revision A ...
Page 80: ...Chapter 8 Transmission features 68 1037852 0001 Revision A ...
Page 88: ...Chapter 10 HX options 76 1037852 0001 Revision A ...
Page 96: ...Appendix B Transportable Gateway TGW 84 1037852 0001 Revision A ...
Page 100: ... Acronyms and abbreviations 88 1037852 0001 Revision A ...
Page 106: ... Index 94 1037852 0001 Revision A ...